Which document is most closely related to material custody tracking?

The NAVSUP 1250-1 is specifically designed for requisitioning and tracking material within the supply chain, making it the most relevant document for material custody tracking. This form facilitates the management of material and helps ensure accountability for items being received, stored, and issued. It allows for detailed documentation of who has possession of specific materials, which is critical for maintaining accurate records and ensuring proper inventory control within Navy logistics operations.

In contrast, the other options serve different purposes. SINGLE LINE CONSUMPTION is related to the consumption of materials but does not specifically track custody; it focuses on inventory and usage reports. NAVCOMPT 2155 is a financial document that deals with various accounting procedures rather than material management. QDR (Quality Deficiency Report) is centered on identifying and reporting deficiencies in materials or services, but it does not directly pertain to custody tracking. Thus, the NAVSUP 1250-1 stands out as the most applicable document for maintaining systematic control over material custody.